Combination lathe-tool



Feb. 13, 1945. A c, ELS N 2,369,600

COMBINATION LATHE-TOOL Filed Oct. 13, 1943 4 Sheets-Sheet l j VI NVENTOR. mi ed-s 6/ ielsen I F 2 BY Z Z V 3 2 Feb. 13, 1945. A. c. NIELSEN 2,369,600

COMB INAT ION LATHE-TOOL Filed Oct. 13, 1943 4 Sheets-Sheet 2 Bit 0 6 W 6 INVENTOR. I jndraas 812/3150? wawadfl m 15 Fig. 16

Feb. 13, 1945'. A c. N L N 2,369,600

COMBINATION LATHE-TOOL Filed Oct. 13, 1943 4 Sheets-Sheet 3 v INVENTOR, fidreaw 5. Vilselz BY ,y

Feb. 13, 1945. A. c. NIELSEN COMBINATION LATHE-TOOL Filed 061;. 13, 1943 4 Sheets-Sheet 4 Patented Feb. 13, 1945 UNITED I STATES" PATENT OFFICE Y 2,369,600 v COMBINATION LATHE-roof. Andreas G. Nielsen, East Cleveland, Ohio Application October 13, 1943, Serial;- No. 506,120 I I 1o1ami. (CL-29448) I I My invention 'relates broadly to a combina I tion lathe-tool, comprising one or several incdividually mounted cutters or bits well under; stood by others skilled in the art.

The object of this invention is to provide a simple construction having efficient means for the purpose of facilitating the tool setting pre I paratory to turning.

.The stopengaging member mounted in the base has a slight. rotationalmovement to com: pensate for the exact want of alignment of the stop receiving groove formed in the removably and adjustably mounted stop member or members in the tool carrying member, thus obviat ing the effort of positioning the tool mounting to an exact index marking as is usual with j a tool mounted on a compound rest on a lathe;-

I The invention consists substantially in the construction, combination and arrangement of parts hereinafter set forth as shown by the ac companying drawings and finally pointed out in the appended claim.

Reference is to be had to the accompanying.

drawings forming a part of thisvspecification in I which like reference characters indicate corre-' sponding parts throughout the several views. Figure lis a top plan view of the combination lathe-tool, one of the closure plates 66 has been removed to show the arcuate slot in the plate 31, and its approximate position therein between the cheek carrying posts.

Figure 2 isaplan view of the base and further illustrating the approximate position of the stop engaging member l5, and the handle l6 by means: of which it is manipulated. r I Figure 3 is an end' view of the T shaped member. I I

Figure 4 is a side .view of the T' shaped member shown in Figure 3. I

I Figure 5 is a sectional view in Fig. 1.

' Figure 5A is a bottom viewof Figure 5 taken on the line C--C, the base has been removed to disclose the recess in the tool carrying member,

taken on line ,A-A

and also the removably mounted adjusta le.

segmental sections in the recess. Figure 6 is a plan view of one of the segments separated from the tool carrying member.

Figure '7 is an edge elevation of the segment shown in Fig. 6. Figure 8 is a plan view of one of the closure plates separated from the tool carrying member. Figure 9 is an edge elevation of the closurje plate shown in Figure 8. I I

Figure 10 isa top plan view of one of the cheek plates, removed from thejcheek carrying post.

mgmeu is'ia "view in side elevation of the cheek plate shown in Figure 10 looking in the directionof thearrows B--B in-Figure 10 to illlustrate the position of the chamber 50 therein. j v

. Figure 12 is a top plan view of the shouldered nut 39 with its socketfillister head cap screw 52.

Figure 13 is; a side view of the shouldered nut shown in Fig. 12.

Figure 14 is a plan view of the stop engaging member l5 mounted in the base l0, clearly shown in position in Figure 2.

Figure .15 'is' aside view of the stop engaging member shown in Figure 14.

Figure 16 is a front View of the stop engaging member shown in Figures 14 and 15. t Figure 17 is a side view of the stop engaging member and the handle by means of which it is manually operated in thebase.

Figure 18 is an end view of the handle shown in Figure 17 illustratingthe position of the eccentric; pin thereon.

I Figure 19 is. a top plan view of a variant of a tool carrying member that may be mounted on the base shown in Figure 2, the tool carrying member being provided with a boring bar, the boring bar being shown fragmentary Figure 20 is a side view of the variant shown in'Figure l9. r

"Figure 21 is'a plan view of the groovedring that may be adjustably mounted in the recess providedin the tool carrying member shown in Figures 19 and 20.

"Ihebase l0 isformed with an eccentric II, and a: perpendicular cylindrical tubular member I? havinga common center with the eccentric. The upper endl3 of the aforesaid cylindrical member is provided with an external screwthread |4 for the reception of thefnut 33. In the base there is provided a vertically positioned movable stop engaging member l5 which is manipulated by. meansof the handle l6-..

dle l6. The portion 2| of the stop engaging I member is reduced and is adapted to engage in a groove formed in the segment or ring herein-. after described. 1

In-the solid cylindrical portion 22 of the handle l6 there is provided a through bore 24 adapted to receive-the pin 25, the portion 26 of which projects beyond the cylindrical portion and isextending out from the cylindrical portion 22 of the handle I6 is shown in Figs. 17 and 18.

The projecting portion 26 of the pin. iszadapt- .1;

ed to limit the rotational movement of the han- 52 threaded therein are shown in Figs. 12 and 13.

In the plate portion 31 of g the tool carrying member 3| adjacent its bottom surface there is provided fixedly mounted horizontally extending studs 42, 43 and 44, all alike, one being provided for each cheek plate, these studs are shown clearly in the bottom view of the tool carrying member 3| in Fig. 5A.

In the face of each of the cheek plate carrying posts there is provided a vertically extending parallelgroove'45, seeposition of the grooves in Fig. 1. The surface remote from the groove is angularly inclined as illustrated in Fig. 1 at 46.

dle to 180 in its movement in the base'by'en-" gaging the upper wall of therecess :21 formed;

therein. When the handle is turned clock-wise,

the stop engaging member is released from the groove formedin the segment or ringmounted in the recess formed inthe tool carrying member, and when turned counter-clockwise it is moved upward into the groove. .The movement is impartedto the stop' engaging member by means of the eccentric pin 23on the. end of the cylindrical portion of thehandle acting as a cam in the transverse groove l9 formed in the stop engaging member. The aforesaid movement transmitting means is, longitudinally mounted in the base In, see Fig. 1. The stopengaging member has a slightrotationalslackin the base to compensate for want of exactalignmentv of the groove formed in the segment .orring. In

the arrangementof the parts shown in the de- The cheek plate 41 in which the tool bit 48 is removablyand adjustably secured by means of the set screw 54 is machined to fit the cheek plate carrying post with accuracy; and the integrally formed rib 4.9 on .the cheek plate slidingly fits in the groove 45 formed in the cheek plate carrying post and is adapted to keep the cheek plate in exact alignment thereon as ,well as to assist in taking the thrust .on the tool bit in the machining operation. In the cheek plate there is provided a chamber 50. remote from the ribv 49 but parallel therewith that extends from its bottom surface part way up its length and into which one of the fixedly mounted horizontally extending studs may extend. The chamber 50 in the cheek plate is shown in the bottom view of the tool carrying member in Fig. 5A,, and also in the detail views of the cheek plate shown in Figs. 10 and 11.

tail assembled view shownin Fig.,17, itwill be I noted that the end of the cylindrical portion 22 is spaced apart a short distance .from the fiat face l8 on the stop engaging member, this construction allows the stop engaging member to rotate slightly to enter the groove, in the. segmentv or ring should it be out of. exactalignment with the portion 2 I- The T shaped member 28 isadapted to fit. in the slot provided to receive the samein the conventional compound rest. on a standard lathe, and the base l0 isheld in. clamped position thereon by means of a socket fillister head cap screw 29-that extends down through the perpendicular cylindrical portion on the base to thread into the threaded bore 30 provided therein to'receivethe same. The aforementioned T shaped member 28 and the socket fillister head can screw 2915 provided to clamp the base on the. compound, rest of the lathe, well understood by those skilled. in the art.

On the base there is removably mounted a ro-. tatable tool carrying member 3| and is held thereon by meansof friction washer 32 and the nut '33. The tool carrying member is providedwith a plurality of spaced perpendicular cheek plate carrying posts as at 34, and 36,.shown in .the plan view Fig. .1. As these cheek plate carrying. posts are all of similar. construction, it. is thought that a description of one of them willsufliceifor all. The check plate carrying post is integrally formed with the plate portion. 3| of the toolcarryin member and is provided with a vertically extending elongated through slot.38 for the reception of :theslidably mounted nut 39, which is provided "witha treadedbore 40 and a shoulder 4| atone-end, provided to prevent the nut slipping through the slot formed in the cheek plate carrying post in which it is mounted. Detail views of thenut 39'with a socket fillister'head cap screw.

A set screw 5| in the cheek plate extends vertically downward into the chamber 50, and is adapted to engage the horizontally extending stud project ing from the plate portion of the .tool carrying member thereinto. See position of the aforementioned studsin Fig. 5A.

When the socket. fillister head cap screw 52 in the counterbore 53, in the cheek plate 41 is released in the nut 39 mounted in the cheek plate carrying post, the. setscrew 5| in the cheek plate with its tool bit 48 may be'screwed down against the stud extending into the chamber 50 to force the cheek plate upward on the cheek plate carrying post to adjust the height of the tool bit carried thereby, and when the'set'screw 5| is screwed upward the cheek plate may be manually forced downward to properly position the tool bit relative to the stock being machined. The socket fillister head cap screw 52 is adapted to clamp the cheek plateagainstthe cheek plate carryin post through its cooperation with the shouldered nut. The tool bit is held in position in the cheek plate by means of the set screw 54 that is threaded into the cheek plate and engages the tool bit as shown in the detail view in Fig. 11. v

In the bottom surface of the plate portion '31 there is provided an annular recess 55 concentric In the plate portion .31 there is provided a plurality-of curved or arcu'ateelongated slots positioned between the cheek plate carrying posts disposed in-a circle as at 63, and 65. See the position of the aforesaid slots in thedotted lines in Fig. 5A, also in Fig.1 under the closure plates 66. In Fig, 1, one of the closure. plates has beenbefore and after adjustment.

removed to clearly showthe position of the arcuate slot in the plate portion 31, and the seg ment below in the recess.

" A closure plate 66 is provided'for each of the aforesaid arcuate slots, and each is provided with a hole 61 through it for the reception of a socket fillister head cap screw 68 that extends 1 through the closure plate, the plate portion 3! of the tool carrying member '3! to engage in a -ment of thetool carrying member3l on the base rotationally. The closure plate 66 is adapted to keep the metal chips out of the slots, and also to act as a friction washer under the socket fillister head cap screw.

When it is necessary to adjust the tool bit rotationally relative to the stock being machined,

is released, thus releasing the segment or ring in the recess 55, after which the tool carrying member may be rotated slightly to the right or ytlieleft to bring the tool bit in to proper position, and when properly positioned the released socket fillister head cap screw is tightened,

securing the tool carrying member in position on the base.-

It is obvious that the down-time for tool grinding and resetting is cut down to a minimum, and production may be stepped up. Furthermore the tool bit is solidly clamped and supported with a minimum of overhang. V I In the variant shown in Figs. 19 and 20, a boring bar holder 69 is mounted on the baseshown in Fig. 2 to illustrate how various tool carrying membersmay be substituted thereon.

To remove the tool carrying member and replace it with another, the nut 33 and the washer 32 are removed and the selected tool carrying member placed on the base, the washer and nut .restored to their respective place, then the ring or segments are adjusted to meet the exigencies of use. A face plate for a lathe is shown at with a standard lathe dog 1| mounted on a piece of stock centered on a lathe center mounted in the headstock spindle in the well known manner and familiar to those skilled in the'art. The combination lathe-tool, with one of its tool bits in operative position is shown in Figure 1. It is believed that the operation of the combination lathe-tool will be clear, in. view of the p the predetermined socket fillister head cap screw cess formed in the bottom surface thereof, an eccentric portion on its upper surface, a perpendicular cylindrical tubular portion concentric with the eccentric,the'upperend of which-is provided with an external screwthread, a handle having a cylindrical portion having a through bore therein and aneccentrically positioned pin on the endthere'of', longitudinally mounted in the base, a pin mounted in the through bore in the cylindrical portion of the handle and having a portion thereof projecting therefrom to engage the upper wall of the elongated'recess the rotation of the formed in the base to limit handle in the base, a stop engaging member mounted in'the base vertically to the longitu- I dinally mounted handle, having a reduced upper portion, and having a fiat surface formed thereon having a transverse groove formed therein to receive the eccentrically positioned pin on the handle, the handle being adapted to actuate the stop engaging member through the eccentrically positioned pinthereon acting as a cam in the transverse groove, a tool carrying member comprising a plate having anannular recess formed in the under surface thereof concentric with the eccentric on the base, a plurality of perpendicular arranged cheek plate carrying posts integral with the plate portion, the plate portion having arcuate slots formed therein between the the cheek plate carrying posts each being pro- 'Vided with a vertical elongated throughflslot,

foregoing description which has been given in connection with that of the construction.-

I am aware that my invention may be embodied in other specific forms without departing'from the spirit or essential attributes thereof;' and'I therefore desire that the present embodiments to be considered in all respects as into the chamber to engage and having adjacent thereto a parallel vertical groove, fixedly mounted longitudinally'extending studs mounted in the plate portion adjacent its lower surface, acheek plate removably and adjustably mounted on each cheek plate carrying post and provided with an integral rib and also having a chamber formed therein parallel to the; rib but remote therefrom, the rib engaging] in the parallel groove in the cheek carrying post, and the chamber receiving one of the fixedly mounted longitudinally extending studs, a set screw in the cheek plate and extending the stud extending thereinto, a 'socket fillister head cap screw in the cheek plate adapted to hold the cheek plate on the cheek plate carrying post through its cooperation with a shouldered nut slidably mounted in the vertical elongated through slot in the cheekplate carrying post, a tool bit removably and adjustably mounted in the cheek plate and held j therein by a set screw, a plurality of grooved segments removably and adjustably mounted in the recess in the plate portion, a closure I plate having a hole therethrough to cover an arcuate slot in'the plate portion, ,a

socket fillister head cap screw passing through the hole in the closure plate and down through thearcuate slot formed in the plate portion to engage in a threaded bore in the segment mounted in the recess in the plate'portion to secure the segment, a friction washer mounted on the cylindrical tubular portion and a, nut threaded thereon to secure the tool carrying member on the base, and a socket fillister head cap screw passing down through thecylindrical tubular portion and threadedly engaging a-T shapedmember cooperating therewith to secure the device on a lathe.

' ANDREAS C.. NIELSEN.

cheek plate carrying posts, 

